whats the aftermarket stuff for suzuki? (like Toyota has TRD(toyota racing development))
Do you mean "sponsored performance parts" like TRD, Ford SVT, GM Performance parts, etc? If so, Suzuki doesn't really have an arm like that. I guess the closest would be Suzuki Sport out of Japan.
There are plenty of aftermarket vendors here in the US though and many can be found through our banners on this web page.
-Eric